Bad service

What a bad experience l had with one of the top companies we have. I had ordered things from shein and as usual l pay for my order and customs. And then upon delivery because I had put my mother’s cell phone number since she’s in South Africa so that when they deliver, they can call her because I am not in South Africa. My mother then got a message on WhatsApp saying that she needed to email a certain email address and send the shipment number together with her ID Number so obviously it was me the person that had ordered who was supposed to send those things. I then took the email address that was on the message and I emailed it and said what exactly is the purpose of all this because on your message you’re saying I need to provide a ship number, which is there on your message and why do I need to give you my ID number and also can we communicate via email so we can keep trail because the person that you sent a WhatsApp message to is my mother and she’s the one in South Africa. Can we email each other so that I can be able to respond. The lady then called me screaming at me cursing at me calling me words saying it’s people like me that make businesses look bad because I had simply asked. Why is she asking for my ID number in the shipment number if she is really really from FedEx funny enough I was dumbfounded my husband even took the phone and started responding on my behalf saying why are you shouting like this at my wife and and he asked if he can speak to the manager, and surprisingly the manager was sitting right next to the lady that was screaming at me the manager’s name is Cheryl and the person that I was talking to is Nontshikelelo I was so shocked as to why people that work for such a big company would speak like this to their to their customers and she told me that this is because we need to create your profile. I don’t think things were going to escalate the way they did. I then say it OK please let me know which FedEx which branch do you work for? They told me is the one in Boksburg. I went ahead and said my sister you know how South Africa is full of ****s. Why should it be easy for me to provide my ID number without asking any questions? Because I was honestly trying to understand why was she shouting and screaming at me like that also because she is in South Africa she called me via WhatsApp at 1:47 AM. Waking me up from my sleep. I asked her did you have a bad day or not because if you did, it is not fair for you to take out your frustrations on me. I was really, really shocked. I was so angry. I couldn’t respond. I could not do anything. That is why my husband took the phone and started talking to these ladies on my behalf. I was dumbfounded I was speechless. My mouth was on the floor. And then days later after asking for the email address so that we can resolve these things via email because Cheryl, the manager had said she was going to send her email address so that we can resolve this issue. I saw a message come from the same number on WhatsApp saying I apologize for speaking to you the way I did days later And guess what I had ordered a two piece for my son. Only one piece from the two piece was delivered now how do I know? FedEx is not the one that stole one of my items or where I had ordered are the ones that did not deliver everything also in a matter like this who do I even ask should I go back to FedEx and speak to the same lady and get shouted on again Because they also have management that cannot even stop their employees from screaming and shouting at customers. I wish there was a place where I could send screenshots because I screenshot it. The apology. I screenshoted everything the emails the calls everything.